Embed all platforms into components (#20677)

* Consolidate all components with platforms

* Organize tests

* Fix more tests

* Fix Verisure tests

* one final test fix

* Add change

* Fix coverage

homeassistant/components/mychevy/binary_sensor.py

@@ -0,0 +1,90 @@
+"""Support for MyChevy sensors.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.mychevy/
+"""
+import logging
+
+from homeassistant.components.mychevy import (
+    EVBinarySensorConfig, DOMAIN as MYCHEVY_DOMAIN, UPDATE_TOPIC
+)
+from homeassistant.components.binary_sensor import (
+    ENTITY_ID_FORMAT, BinarySensorDevice)
+from homeassistant.core import callback
+from homeassistant.util import slugify
+
+_LOGGER = logging.getLogger(__name__)
+
+SENSORS = [
+    EVBinarySensorConfig("Plugged In", "plugged_in", "plug")
+]
+
+
+async def async_setup_platform(hass, config, async_add_entities,
+                               discovery_info=None):
+    """Set up the MyChevy sensors."""
+    if discovery_info is None:
+        return
+
+    sensors = []
+    hub = hass.data[MYCHEVY_DOMAIN]
+    for sconfig in SENSORS:
+        for car in hub.cars:
+            sensors.append(EVBinarySensor(hub, sconfig, car.vid))
+
+    async_add_entities(sensors)
+
+
+class EVBinarySensor(BinarySensorDevice):
+    """Base EVSensor class.
+
+    The only real difference between sensors is which units and what
+    attribute from the car object they are returning. All logic can be
+    built with just setting subclass attributes.
+
+    """
+
+    def __init__(self, connection, config, car_vid):
+        """Initialize sensor with car connection."""
+        self._conn = connection
+        self._name = config.name
+        self._attr = config.attr
+        self._type = config.device_class
+        self._is_on = None
+        self._car_vid = car_vid
+        self.entity_id = ENTITY_ID_FORMAT.format(
+            '{}_{}_{}'.format(MYCHEVY_DOMAIN,
+                              slugify(self._car.name),
+                              slugify(self._name)))
+
+    @property
+    def name(self):
+        """Return the name."""
+        return self._name
+
+    @property
+    def is_on(self):
+        """Return if on."""
+        return self._is_on
+
+    @property
+    def _car(self):
+        """Return the car."""
+        return self._conn.get_car(self._car_vid)
+
+    async def async_added_to_hass(self):
+        """Register callbacks."""
+        self.hass.helpers.dispatcher.async_dispatcher_connect(
+            UPDATE_TOPIC, self.async_update_callback)
+
+    @callback
+    def async_update_callback(self):
+        """Update state."""
+        if self._car is not None:
+            self._is_on = getattr(self._car, self._attr, None)
+            self.async_schedule_update_ha_state()
+
+    @property
+    def should_poll(self):
+        """Return the polling state."""
+        return False